go off the deep end

US /ɡoʊ ɔf ðə diːp ɛnd/
UK /ɡoʊ ɔf ðə diːp ɛnd/
"go off the deep end" picture
1.

perder a cabeça, surtar, enlouquecer

to become very angry or emotional, or to start behaving in a crazy way

:
•
When he heard the news, he really went off the deep end.
Quando ele ouviu a notícia, ele realmente perdeu a cabeça.
•
She tends to go off the deep end when she's stressed.
Ela tende a perder a cabeça quando está estressada.
:
go offgo off withgo to the ends of the earthdeepgo off the railsgo off on a tangentend